Bug 2516754 (CVE-2026-74423) - CVE-2026-74423 kernel: accel/amdxdna: Fix leak when pinning ubuf pages
Summary: CVE-2026-74423 kernel: accel/amdxdna: Fix leak when pinning ubuf pages
Keywords:
Status: NEW
Alias: CVE-2026-74423
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-15 06:31 UTC by OSIDB Bzimport
Modified: 2026-08-20 22:12 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-08-15 06:31:46 UTC 
In the Linux kernel, the following vulnerability has been resolved:

accel/amdxdna: Fix leak when pinning ubuf pages

When pin_user_pages_fast() returns fewer pages than requested, the pages
that were successfully pinned are not released, leading to a leak.

Fix this by unpinning any partially pinned pages before returning failure.
Comment 1 Keith Grant 2026-08-20 22:08:56 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081513-CVE-2026-74423-8ed6@gregkh/T
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